Title :
Circularly Polarized Microstrip/Elliptical Dielectric Ring Resonator Antenna for Millimeter-Wave Applications
Author :
Perron, Alexandre ; Denidni, Tayeb A. ; Sebak, Abdel Razik
Author_Institution :
Inst. Nat. de la Rech. Sci. (INRS), Montreal, QC, Canada
fDate :
7/2/1905 12:00:00 AM
Abstract :
A new single-element circularly polarized antenna for millimeter-wave applications is presented in this letter. A simple hybrid microstrip/elliptical dielectric ring resonator configuration is used to achieve a relatively high antenna gain. A reversed T-shaped coupling slot generates the circular polarization. The ring-shaped dielectric resonator is used to increase the gain and fine-tune the axial ratio (AR) bandwidth. Measurements show that an impedance bandwidth of 12% and a considerably wide axial ratio bandwidth (10%) are possible. The measured gain is maintained over 9 dB for a large portion of the operational bandwidth.
Keywords :
dielectric resonator antennas; electric impedance; electromagnetic coupling; electromagnetic wave polarisation; microstrip antennas; millimetre wave antennas; slot antennas; axial ratio bandwidth; high antenna gain; hybrid microstrip/elliptical dielectric ring resonator antenna; impedance bandwidth; millimeter-wave application; reversed T-shaped coupling slot; single-element circularly polarized antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Dielectric measurements; Dielectric resonator antennas; Gain; Gain measurement; Impedance measurement; Microstrip antennas; Microstrip resonators; Optical ring resonators; Polarization; Circular polarization; dielectric resonator antennas; microstrip antennas; millimeter-wave antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2064750
